Polycyclopentadiene
聚环戊二烯
🗣️ 情景例句
I just want to be able to make my own decision.
我只想能够自己决定。
He that is ill to himself will be good to nobody.
不知自爱的人也不会爱别人。
Have you cleared your luggage with customs?
你的行李通关了吗？